why ct is testing using dc.. y cant we use AC insted of dc on POLARITY TEST.

6 Answers  

---

What is the full form of SON-T lamp?

1 Answers   HAL,

---

yesterday i am using my laptop by plugging power supply also battery was working properly after while i unplugged AC power source ,using my battery i played car game (use much power) after that the battery finished the charge and it closed my PC. after that my battery not charge (when unplug automatically PC will turn off)

1 Answers   HPCL,

---

Which type of air compressor is used now a days in the market. Keeping in mind of energy efficiency and maintenance points. Relevant documents may also be sent on mentioned email ids.

0 Answers   DAE,

---

what factors to needed while selecting a MCB and MCCB

3 Answers  

---

---

What is the function of Harmonics filter, and how to calculate that rating of the energy saving?

1 Answers  

---

how many electricity poles are there and what are the names and their sizes.

0 Answers  

---

Earth has zero potential then what would be the neutral potential ?

0 Answers   JLL,

---

where would be tap changer in transformer & why?

2 Answers   Kentz,

---

how we can classify the circuit braker???????

1 Answers  

---

why do we measure VIBRATION in -24vdc and why we adjust gap voltage -9vdc to 10-vdc? i am trying to get this information since 5 years, yet i haven't get reliable answer, i hope i can get from you.

0 Answers  

---

what is the difference between high impedance & low impedance

1 Answers   L&T,

---